C$143 Cheap Flights from St Louis (STL) to Chattanooga (CHA)

Compare St Louis to Chattanooga flight deals

Find the cheapest month or even day of the year to fly to Chattanooga

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Flight deals from St Louis to Chattanooga

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Chattanooga Airport? If you want to travel next month, return fares start from C$399. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from St Louis to Chattanooga

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Chattanooga flights are currently cheapest in May.

St Louis to Chattanooga: Alternative routes

Compare routes from St Louis to Chattanooga below. You may find an airport to fly into that's cheaper, faster, or easier than Chattanooga.

St Louis to Chattanooga: Flight information

The things to know before you go.
Cheapest flight foundC$143
Cheapest month to flyMay

Finding cheap flights from St Louis to Chattanooga: Frequently asked questions

The best price we found for a return flight from St Louis to Chattanooga is C$336. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Chattanooga. But we found flights with one or more stops from C$336.
As of April 2026, there are no flights flying from St Louis to Chattanooga.
The cheapest month to fly from St Louis to Chattanooga is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Chattanooga Airport on Saturday, May 30, 2026.
No airlines currently offer direct flights between St Louis Airport and Chattanooga Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chattanooga but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chattanooga is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to Chattanooga.

Traveling from Lambert-St. Louis International Airport (STL) to Chattanooga Airport (CHA): what you need to know

  • If you're traveling during a public holiday or other peak period, give yourself more time. A good rule is two hours before domestic flights and up to four hours before international departures. Security and check-in lines will be longer.

  • We make it a piece of cake to get a flight with a stopover. To look at the options for flights from Lambert-St. Louis International Airport to Chattanooga Airport, uncheck 'Direct flights only.' Then, pick a flight that has a stop long enough to tour the city of your choice. Popular stopovers between STL and CHA include:

    • Hartsfield-Jackson Atlanta International Airport

    • O'Hare International Airport

    • Charlotte Douglas International Airport

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Chattanooga Airport (CHA)

  • The lowest price we've found for a one-way ticket from Lambert-St. Louis International Airport to Chattanooga Airport is C$143. For a return flight on this route, the best price is C$336. Depending on the availability when you book, these fares can change.

  • It's a good idea to book as early as possible if you're looking for cheap flight tickets from STL to CHA. That's because airlines change prices based on demand, which tends to rise closer to the date of departure.

  • If you can be flexible with your travel plans, use the 'Whole month' search tool. It'll find the lowest price across every month when looking for a ticket from Lambert-St. Louis International Airport to Chattanooga Airport.

  • Log into your online account or use the app to set up a Price Alert. We'll let you know right away if there's a cheaper deal on this route. It's easy to do, and it'll save you the hassle of looking for cheap flight tickets from STL to CHA every day.

  • Play around with filters to find the perfect trip for you. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Lambert-St. Louis International Airport to Chattanooga Airport, use the 'Sort by' function. You can also filter results by departure and arrival times, airline, and journey duration.

Handy information about Lambert-St. Louis International Airport (STL)

  • Lambert-St. Louis International Airport is about 26 kilometres from central St Louis. If you're catching a cab, driving or ride-sharing from the center, it'll take 21 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the travel time to be around 36 minutes.

  • Want a stress-free start to your trip? Stay near STL. Whether you have an early flight from Lambert-St. Louis International Airport to Chattanooga Airport or want to avoid feeling rushed, these hotels have you covered:

Arriving at Chattanooga Airport (CHA)

Getting from Chattanooga Airport (CHA) to central Chattanooga

  • From Chattanooga Airport, Chattanooga is approximately 21 kilometres away. It takes around 17 minutes to get to the center driving.

  • It takes roughly 1 hour and 9 minutes when traveling by public transport.

When to fly to Chattanooga Airport (CHA)

  • It's time to work out your trip dates for your flight from Lambert-St. Louis International Airport to Chattanooga Airport. September is the most popular month to visit Chattanooga. If you want a more low-key vibe, go in February.

  • Book your flight from Lambert-St. Louis International Airport to Chattanooga Airport for July if you want to explore Chattanooga during its warmest month. You can expect temperatures of between 17ºC and 30ºC.

  • January has average temperatures of between -5ºC and 10ºC. Search for cheap flight tickets from STL to CHA sometime around then if you want to travel in cooler conditions.

More about Chattanooga

Complete your Chattanooga trip with hotels and a car rental

  • We've got more party tricks than just comparing flights. After booking your cheap ticket to Chattanooga Airport, browse our car rental offers that'll give you the flexibility and freedom to see the sights at your own pace. Next, have a look at our exclusive rates for hotels to find your ideal Chattanooga stay.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.